A split-type isokinetic muscle strength training device

Abstract

This application discloses a split-type isokinetic muscle strength training device, which includes a seat and a main unit. The seat includes a connector; the main unit includes a main body and a fixed base. The main body includes rollers and is supported on the ground by the rollers. The fixed base includes a telescopic component, foot supports, and limiting grooves. The fixed base is mounted on the main body via the telescopic component, and the foot supports are mounted on the fixed base. In this split-type isokinetic muscle strength training device, the main unit moves via the rollers. When it moves to an appropriate position, the telescopic component moves the fixed base downward relative to the main body, thereby causing the four foot supports to gradually approach and contact the ground, allowing the main unit to be stably placed on the ground. The limiting grooves gradually move downward and fit against the connector, thus connecting the seat and the main unit. When the training intensity of the main unit is high, displacement between the seat and the isokinetic device is avoided, which could affect the training effect or cause injury to the user.

Description

Technical Field

[0001] This application relates to the field of sports equipment technology, and in particular to a split-type isokinetic muscle strength training device. Background Technology

[0002] Isokinetic training equipment, as an efficient and safe tool for muscle strength assessment and rehabilitation training, has been widely used in professional sports training institutions, rehabilitation centers, and gyms. However, current isokinetic training equipment on the market has many defects in its structure and ergonomic design, which seriously affect user experience and training results.

[0003] Specifically, existing technologies mainly suffer from the following typical problems: The first type of equipment is a separate design, providing only the isokinetic generator without a dedicated seat. Users need to find or configure a seat themselves, which undoubtedly increases the complexity and cost of use. Furthermore, since the seat is not specifically designed for isokinetic training, its height, fore-aft position, etc., often cannot be precisely adjusted, making it difficult for users to achieve a standard training posture, and potentially leading to sports injuries due to improper posture. The second type of equipment, while equipped with a seat, has a rudimentary design and lacks an effective connection and adaptation mechanism. These seats typically lack the function of finely adjusting for different users' heights, leg lengths, and other body dimensions, making it difficult for users with significant differences in body size to obtain consistent support and comfort. In addition, the seat and the isokinetic generator are often independent of each other. Individual components lack reliable connections, and during high-load training, especially lower limb pedaling or pressing movements, the enormous reaction force can easily cause relative displacement, sliding, or even overturning of the seat or main unit. This not only affects the accuracy and effectiveness of training but also poses safety hazards. To solve the aforementioned connection and stability issues, designs that integrate the constant velocity main unit and seat have emerged on the market. However, in pursuit of structural stability, these designs rigidly connect the main unit, transmission mechanism, and seat frame, forming a large and cumbersome whole. This results in a huge device size, making it extremely inconvenient to move and difficult to adapt to different site layouts. It also significantly increases warehousing and transportation costs. Utility Model Content

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a split-type isokinetic muscle strength training device, which adopts a split design for easy mobility while ensuring a stable connection between the seat and the main unit during use.

[0005] A split-type isokinetic muscle strength training device according to one embodiment of the present application includes: a seat, the seat including a connector; The main unit includes a main body, a fixed base, rollers, and a telescopic component. The rollers are connected to the main body via the telescopic component, and the main body is supported on the ground by the rollers. The fixed base includes a foot support and a limiting groove. The foot support is installed on the fixed base. When the telescopic component is shortened, the rollers move in a first direction, the fixed base moves relative to the rollers in a second direction, the foot support contacts the ground to support and fix the main unit, and the limiting groove moves in the second direction, with the connector entering the limiting groove to connect the seat and the main unit.

[0006] According to one embodiment of this application, the connector is rotatably connected to the seat base, and the connector is capable of rotating horizontally relative to the seat base; the seat base includes a fixing member, and the connector is provided with a fixing hole, which can be inserted into the fixing hole to restrict the rotation of the connector.

[0007] According to one embodiment of this application, the seat includes a seat cushion and a lifting member, wherein the seat cushion is fixedly connected to the seat base via the lifting member.

[0008] According to one embodiment of this application, the seat includes a support member, one end of which is connected to the seat base and the other end of which is connected to the seat cushion. The support member includes a support column and a support sleeve. The support column is installed inside the support sleeve and is axially movable along the support sleeve.

[0009] According to one embodiment of this application, the seat cushion includes a lower frame and a seat plate. The lower frame is located in a first direction of the seat plate. The lower frame includes a horizontally placed electric push rod. The fixed end of the electric push rod is mounted on the seat plate, and the telescopic end of the electric push rod is mounted on the lower frame. The movement of the telescopic end of the electric push rod can drive the lower frame to move in a third direction or a fourth direction opposite to the third direction.

[0010] According to one embodiment of this application, the seat cushion includes an upper frame and a tilting unit; the upper frame is rotatably connected to a lower frame, and the upper frame is located in a first direction of the lower frame; the tilting unit includes a pad block, the upper frame is provided with a pad block pivot, the pad block is rotatably connected to the upper frame through the pad block pivot, the lower frame includes a crossbeam, and the crossbeam is located in a second direction of the pad block pivot; when the upper frame rotates around the lower frame in the first direction, the pad block can rotate around the pad block pivot and abut against the crossbeam.

[0011] According to one embodiment of this application, the tilting unit includes a torsion spring, which is fixedly installed on the pad's rotating shaft. The torsion spring has a torsion arm, and when the upper frame rotates around the lower frame, the pad can abut against and drive the torsion arm to rotate.

[0012] According to one embodiment of this application, the tilting unit includes a handle, the handle includes a connecting part and a bending part, the connecting part and the bending part are connected at an angle, and the handle is fixedly connected to the pad block through the connecting part.

[0013] According to one embodiment of this application, a backrest and a backrest push rod are included. The backrest is rotatably connected to the seat cushion, the fixed end of the backrest push rod is connected to the seat cushion, and the telescopic end of the backrest push rod is connected to the backrest. The backrest push rod is telescopic to allow the backrest to rotate around the seat cushion.

[0014] According to one embodiment of this application, a gas spring is included, with one end of the gas spring connected to the seat cushion and the other end connected to the backrest.

[0015] The split-type isokinetic muscle strength training device according to the embodiments of this application has at least the following beneficial effects: the main unit moves via rollers, the fixed base is provided with foot supports facing downwards, the fixed base is connected to the main unit via a telescopic component, the telescopic component can drive the fixed base to move downwards relative to the main unit, thereby driving the four foot supports to gradually approach and contact the ground so that the main unit can be stably placed on the ground, and the limiting groove gradually moves down and fits the connector head to realize the connection between the seat and the main unit. When the training intensity of the main unit is large, displacement between the seat and the isokinetic device is avoided, which would affect the training effect or cause injury to the user.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the structure of a split-type isokinetic muscle strength training device according to one embodiment of this application; Figure 2 for Figure 1 Enlarged schematic diagram of part A of the structure; Figure 3 for Figure 1 A schematic diagram of the connection between the seat and the main unit in a split-type isokinetic muscle strength training device; Figure 4 for Figure 1 A schematic diagram of the seat cushion in a split-type isokinetic muscle strength training device; Figure 5 for Figure 4 A schematic diagram of the structure of the seat cushion when the upper frame rotates around the lower frame; Figure 6 for Figure 1 A schematic diagram of the lifting and supporting components in a split-type isokinetic muscle strength training device; Figure 7 for Figure 1 A schematic diagram of the backrest structure in a split-type isokinetic muscle strength training device.

[0018] Figure label: 100. Seat; 110. Seat base; 111. Fixing component; 120. Connector; 121. Fixing hole; 130. Seat cushion; 131. Lower frame; 1311. Electric push rod; 1312. Crossbeam; 1313. Push rod hinge; 1314. Gas spring hinge; 132. Seat plate; 133. Upper frame; 1331. Pad pivot; 134. Tilting unit; 1341. Pad; 1342. Torsion spring; 1343. Handle; 1344. Connecting part; 1345. Bending part; 135. Armrest; 136. Leg rest; 137. Hinge; 140. Lifting component; 150. Support component; 151. Support column; 152. Support sleeve; 160. Backrest; 170. Backrest push rod; 180. Gas spring; 190. Headrest; 200. Main unit; 210. Main unit body; 220. Fixed base; 221. Foot support; 222. Limiting groove; 230. Roller. Detailed Implementation

[0019] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0020] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0021] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0022] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0023] In the description of this application, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0024] The following is for reference. Figures 1 to 7 This application describes a split-type isokinetic muscle strength training device according to an embodiment of the present application.

[0025] It is worth noting that the positional relationship of each component in the embodiments of this application is as follows: Figure 1 Based on the spatial rectangular coordinate system shown, the X-axis arrow in the figure points from the rear to the front of the split-type isokinetic muscle strength training device, the Y-axis arrow points from the left to the right of the split-type isokinetic muscle strength training device, and the Z-axis arrow points from the bottom to the top of the split-type isokinetic muscle strength training device; the first direction of this application is the top, the second direction is the bottom, the third direction is the front, and the fourth direction is the rear.

[0026] Please see Figure 1 and Figure 2 One embodiment of the split-type isokinetic muscle strength training device of this application includes a seat 100 and a main unit 200; the seat 100 includes a connector 120; the main unit 200 includes a main unit body 210, a fixed base 220, rollers 230 and a telescopic member, the rollers 230 are connected to the main unit body 210 through the telescopic member, the main unit body 210 is supported on the ground by the rollers 230, the fixed base 220 includes a foot support 221 and a limiting groove 222, the foot support 221 is mounted on the fixed base 220; wherein, when the telescopic member is shortened, the rollers 230 move in a first direction, the fixed base 220 moves in a second direction relative to the rollers 230, the foot support 221 contacts the ground to support and fix the main unit 200, the limiting groove 222 moves in the second direction, and the connector 120 enters the limiting groove 222 to connect the seat 100 and the main unit 200.

[0027] In other words, such as Figure 1As shown, the seat 100 and main unit 200 of the split-type isokinetic muscle strength training device are of a split structure. The seat 100 is placed on the ground via the seat base 110, and the main unit 200 is placed on the ground via casters 230 mounted under the main unit body 210. The main unit 200 can also be moved via the casters 230. The main unit 200 also includes a fixed base 220, with four feet 221 facing downwards. The four feet 221 are located around the bottom surface of the fixed base 220. The casters... 230 is connected to the main body 210 via a telescopic component. The telescopic component can drive the roller 230 to move up or down relative to the main body 210. When the telescopic component retracts, the roller 230 moves up relative to the main body 210, and the fixed base 220 installed on the main body 210 moves down relative to the roller 230, causing the four feet 221 to gradually approach and contact the ground. At this point, the four feet 221 replace the four rollers 230 to support the entire main body 200, so that the main body 200 can be stably placed on the ground.

[0028] It is understood that the roller 230 includes a mounting shaft, and the roller 230 is connected to the telescopic component through the mounting shaft. The telescopic component can be an electric push rod, the telescopic end of which is connected to the upper end of the mounting shaft. Driving the electric push rod to extend or retract can realize the up-and-down movement of the roller 230. In some embodiments, the telescopic component can also be an eccentric wheel structure. For example, the telescopic component includes a spring, an eccentric wheel, a bracket, and a motor. The spring is sleeved on the mounting shaft of the roller 230. Moving the mounting shaft downward can compress the spring. The output end of the motor is connected to the bracket. The eccentric wheel is fixedly mounted on the bracket and contacts the upper end of the mounting shaft. The motor drives the eccentric wheel to rotate and, together with the action of the spring, enables the mounting shaft to move up and down, thereby realizing the up-and-down movement of the roller 230.

[0029] To ensure a stable connection between the seat 100 and the main unit 200, the seat 100 is provided with a connector 120, and the fixed base 220 has a corresponding limiting groove 222 at its lower part. When the fixed base 220 is not lowered, the height of the limiting groove 222 is higher than the height of the connector 120. When the fixed base 220 is lowered until the foot support 221 contacts the ground, the height of the limiting groove 222 is the same as the height of the connector 120.

[0030] When using the split-type isokinetic muscle strength training equipment, first push the main unit 200 so that its limiting groove 222 is above and aligned with the connector 120 of the seat 100. Then, open the telescopic component to move the roller 230 upward relative to the main unit, thereby causing the fixed base 220 to move downward and gradually move the limiting groove 222 downward to fit against the connector 120 and achieve a snap-fit. In this way, as... Figure 3As shown, the seat 100 and the main unit 200 are integrated. When the user uses the split isokinetic muscle strength training device, the main unit 200 and the seat 100 will not loosen during operation, ensuring the accuracy of the user's activity assessment results and the effectiveness of the training. At the same time, it also improves the patient's comfort during use.

[0031] Furthermore, such as Figure 2 As shown, the connector 120 is rotatably connected to the seat base 110, and the connector 120 can rotate horizontally relative to the seat base 110; the seat base 110 includes a fixing member 111, and the connector 120 is provided with a fixing hole 121, and the fixing member 111 can be inserted into the fixing hole 121 to restrict the rotation of the connector 120.

[0032] In other words, the connector 120 is connected to the seat base 110 via a pivot. The connector 120 can rotate around the pivot to any angle. For this purpose, the seat base 110 also includes a fixing member 111, which is a pin. The connector 120 has a fixing hole 121. After the connector 120 rotates to a certain angle, the pin is inserted into the fixing hole 121 to secure the connector 120 and restrict its rotation. Different rotation angles of the connector 120 result in different connection positions between the seat 100 and the main unit 200, in order to adapt to the diverse training needs of users.

[0033] In some embodiments, such as Figure 1 and Figure 3 As shown, the seat 100 includes a seat cushion 130 and a lifting member 140. The seat cushion 130 is fixedly connected to the seat base 110 via the lifting member 140. That is, the seat cushion 130 is connected to the seat base 110 via the lifting member 140. Driving the lifting member 140 can raise and lower the seat cushion 130 in the height direction, thereby realizing the height adjustment of the seat 100.

[0034] Furthermore, such as 3 and Figure 6As shown, the seat 100 includes a support member 150. One end of the support member 150 is connected to the seat base 110, and the other end is connected to the seat cushion 130. The support member 150 includes a support column 151 and a support sleeve 152. The support column 151 is installed inside the support sleeve 152 and can move axially along the support sleeve 152. That is, two more support members 150 are provided behind the lifting member 140. The support member 150 includes a support column 151 and a support sleeve 152. The support column 151 is located above the support sleeve 152. A linear bearing is provided on the support sleeve 152. Under the action of the linear bearing, the support column 151 can make smooth linear movement in the vertical direction. The upper end of the support column 151 is fixedly connected to the seat 100, and the lower end of the support sleeve 152 is fixedly connected to the seat base 110. During the process of the lifting member 140 driving the seat cushion 130 to rise and fall, the support column 151 also moves up and down in the height direction. When a user sits on the seat cushion 130, in addition to applying a force along the axial direction of the lifting member 140 to the seat cushion 130, a force along the radial direction of the lifting member 140 is also applied to the lifting member 140. The support column 151 works in conjunction with the lifting column to support the seat cushion 130, reducing the radial force on the lifting member 140 and ensuring that the lifting member 140 can work continuously and stably.

[0035] In some embodiments, such as Figure 4 As shown, the seat cushion 130 includes a lower frame 131 and a seat plate 132. The lower frame 131 is located in a first direction of the seat plate 132. The lower frame 131 includes a horizontally placed electric push rod 1311. The fixed end of the electric push rod 1311 is installed on the seat plate 132, and the telescopic end of the electric push rod 1311 is installed on the lower frame 131. The movement of the telescopic end of the electric push rod 1311 can drive the lower frame 131 to move in a third direction or a fourth direction opposite to the third direction.

[0036] like Figure 4 As shown, the upper end of the lifting component 140 is fixedly connected to the seat plate 132 of the seat cushion 130, and the upper end of the support component 150 is fixedly connected to the lower frame 131. The lifting component 140 drives the seat cushion 130 to rise or fall by driving the seat plate 132 to rise or fall. The lower frame 131 is located above the seat plate 132. The lower frame 131 includes an electric push rod 1311 placed horizontally in the front-back direction. The fixed end of the electric push rod 1311 is fixedly connected to the upper surface of the seat plate 132, and the telescopic end is installed on the lower frame 131. Similarly, the fixed end can also be installed on the lower frame 131, and the telescopic end can be installed on the seat plate 132. Both can drive the lower frame 131 to move back and forth relative to the base by driving the electric push rod 1311, thereby adapting to the user's diverse training needs. Further, as Figure 1 As shown, the split-type isokinetic muscle strength training device also includes handrails 135. There are two handrails 135, which are located on the left and right sides of the lower frame 131, respectively, for users to hold during training.

[0037] Furthermore, such as Figure 4 and Figure 5 As shown, the seat cushion 130 includes an upper frame 133 and a tilting unit 134; the upper frame 133 is rotatably connected to the lower frame 131, and the upper frame 133 is located in a first direction of the lower frame 131; the tilting unit 134 includes a pad 1341, the upper frame 133 is provided with a pad pivot 1331, the pad 1341 is rotatably connected to the upper frame 133 through the pad pivot 1331, the lower frame 131 includes a crossbeam 1312, and the crossbeam 1312 is located in a second direction of the pad pivot 1331; when the upper frame 133 rotates around the lower frame 131 in the first direction, the pad 1341 can rotate around the pad pivot 1331 and abut against the crossbeam 1312.

[0038] In other words, such as Figure 4 and Figure 5 As shown, the upper frame 133 is located above the lower frame 131. The lower frame 131 has a hinge 137 at its rear end. The upper frame 133 is hinged to the rear end of the lower frame 131 via the hinge 137. In order for the upper frame 133 to be tilted relative to the lower frame 131 to adapt to the user's training needs, the split-type isokinetic muscle strength training device includes a tilting unit 134. The tilting unit 134 includes a pad 1341. The lower frame 131 has a crossbeam 1312 in the left-right direction at its front end, and the upper frame 133 has a corresponding crossbeam 1312 in the left-right direction at its front end. There is a pad pivot 1331. When the upper frame 133 covers the lower frame 131, the pad pivot 1331 is located above the crossbeam 1312. The pad 1341 is hinged to the upper frame 133 through the pad pivot 1331. When the upper frame 133 rotates around the lower frame 131, the pad 1341 can be operated to be located between the crossbeam 1312 and the pad pivot 1331. The pad 1341 abuts against the upper surface of the crossbeam 1312. Thus, the inclined upper frame 133 abuts against the crossbeam 1312 of the lower frame 131 through the pad 1341.

[0039] Furthermore, such as Figure 4 and Figure 5 As shown, the tilting unit 134 includes a torsion spring 1342, which is fixedly mounted on the pad shaft 1331. The torsion spring 1342 has a torsion arm. When the upper frame 133 rotates around the lower frame 131, the pad 1341 can abut against and drive the torsion arm to rotate. In other words, the tilting unit 134 also includes a torsion spring 1342, which is mounted on the pad shaft 1331. The torsion spring 1342 has a torsion arm extending from it, and the torsion arm abuts against the pad 1341. Figure 4As shown, the upper frame 133 is placed on the lower frame 131, and the pad 1341 is located in front of the crossbeam 1312. At this time, the torsion spring 1342 has reserved elastic potential energy. Under the action of elastic potential energy, the torsion spring 1342 applies a tendency to rotate backward on the pad 1341 through the torsion arm. When the upper frame 133 rotates upward around the lower frame 131, the pad 1341 rotates backward around the pad pivot 1331 under the action of the torsion spring 1342. The pad 1341 rotates between the crossbeam 1312 and the pad pivot 1331 and abuts against the crossbeam 1312. Therefore, the user only needs to slightly lift the upper frame 133, and the pad 1341 can spontaneously rotate between the crossbeam 1312 and the pad pivot 1331 under the action of the torsion spring 1342, so that the seat cushion 130 can be in an inclined state without manually rotating the pad 1341.

[0040] Furthermore, such as Figure 4 and Figure 5 As shown, the tilting unit 134 includes a handle 1343, which includes a connecting part 1344 and a bending part 1345. The connecting part 1344 and the bending part 1345 are connected at an angle, and the handle 1343 is fixedly connected to the pad 1341 through the connecting part 1344. That is, the tilting unit 134 includes a handle 1343, which is connected to the pad 1341 and located in front of the pad 1341. When the seat cushion 130 is in a tilted state, if the user needs to restore the seat cushion 130 to the state where the upper frame 133 is placed on the lower frame 131, the user needs to first slightly lift the upper frame 133, then grasp the bending part 1345 of the handle 1343 and lift it upwards. In this way, the pad 1341 can rotate forward and disengage from the crossbeam 1312 and the pad pivot 1331.

[0041] In some embodiments, such as Figure 7As shown, the split-type isokinetic muscle strength training device includes a backrest 160, a backrest push rod 170, a headrest 190, and a gas spring 180. The backrest 160 is rotatably connected to the seat cushion 130. The fixed end of the backrest push rod 170 is connected to the seat cushion 130, and the telescopic end of the backrest push rod 170 is connected to the backrest 160. The backrest push rod 170 can extend and retract to allow the backrest 160 to rotate around the seat cushion 130. One end of the gas spring is connected to the seat cushion 130, and the other end is connected to the backrest 160. In other words, the split-type isokinetic muscle strength training equipment also includes a backrest 160 and a headrest 190. The backrest 160 is rotatably connected to the hinge of the upper frame 133, and the headrest 190 is installed on the upper part of the backrest 160. A backrest push rod 170 is hinged to the backrest 160, and a push rod hinge part 1313 extends to the rear of the lower frame 131. The lower end of the backrest push rod 170 is connected to the push rod hinge part 1313, and the upper end is connected to the rear surface of the backrest 160. In addition, a gas spring is also hinged to the backrest 160, and a gas spring hinge part 1314 extends to the rear of the lower frame 131. The lower end of the gas spring is connected to the gas spring hinge part 1314, and the upper end is connected to the rear surface of the backrest 160. In this way, when the backrest push rod 170 extends or retracts, the backrest 160 tilts forward or backward accordingly. During the tilting or retraction of the backrest 160, the gas spring extends and contracts accordingly, providing support for the backrest 160 and ensuring the stability of the backrest 160 structure. In some embodiments, such as Figure 1 As shown, the split-type isokinetic strength training device includes a leg rest 136, which is installed at the front end of the lower frame 131. During training, the user can place their legs on the leg rest 136 to improve the user's comfort during training.

[0042] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. A split-type isokinetic muscle strength training device, characterized in that, include: Seat, the seat including a connector; The host includes a host body, a fixed base, rollers and a telescopic component. The rollers are connected to the host body through the telescopic component. The host body is supported on the ground by the rollers. The fixed base includes a foot support and a limiting groove. The foot support is installed on the fixed base. When the telescopic member is shortened, the roller moves in a first direction, the fixed base moves in a second direction relative to the roller, the footrest contacts the ground to support and fix the main unit, the limiting groove moves in the second direction, and the connector enters the limiting groove to connect the seat and the main unit.

2. The split-type isokinetic muscle strength training device according to claim 1, characterized in that, The seat includes a seat base, and the connector is rotatably connected to the seat base. The connector is capable of rotating horizontally relative to the seat base. The seat base includes a fixing member, and the connector has a fixing hole. The fixing member can be inserted into the fixing hole to restrict the rotation of the connector.

3. The split-type isokinetic muscle strength training device according to claim 2, characterized in that, The seat includes a seat cushion and a lifting mechanism, wherein the seat cushion is fixedly connected to the seat base via the lifting mechanism.

4. The split-type isokinetic muscle strength training device according to claim 3, characterized in that, The seat includes a support member, one end of which is connected to the seat base and the other end of which is connected to the seat cushion. The support member includes a support column and a support sleeve. The support column is installed inside the support sleeve and is axially movable along the support sleeve.

5. The split-type isokinetic muscle strength training device according to claim 3, characterized in that, The seat cushion includes a lower frame and a seat plate. The lower frame is located in a first direction of the seat plate. The lower frame includes a horizontally placed electric push rod. The fixed end of the electric push rod is installed on the seat plate, and the telescopic end of the electric push rod is installed on the lower frame. The movement of the telescopic end of the electric push rod can drive the lower frame to move in a third direction or a fourth direction opposite to the third direction.

6. The split-type isokinetic muscle strength training device according to claim 5, characterized in that, The seat cushion includes an upper frame and a tilting unit; the upper frame is rotatably connected to the lower frame, and the upper frame is located in a first direction of the lower frame; the tilting unit includes a pad block, the upper frame is provided with a pad block pivot, the pad block is rotatably connected to the upper frame through the pad block pivot, the lower frame includes a crossbeam, and the crossbeam is located in a second direction of the pad block pivot; when the upper frame rotates around the lower frame in the first direction, the pad block can rotate around the pad block pivot and abut against the crossbeam.

7. The split-type isokinetic muscle strength training device according to claim 6, characterized in that, The tilting unit includes a torsion spring, which is fixedly installed on the pad's rotating shaft. The torsion spring has a torsion arm. When the upper frame rotates around the lower frame, the pad can abut against and drive the torsion arm to rotate.

8. The split-type isokinetic muscle strength training device according to claim 6, characterized in that, The tilting unit includes a handle, which includes a connecting part and a bending part. The connecting part and the bending part are connected at an angle, and the handle is fixedly connected to the pad block through the connecting part.

9. The split-type isokinetic muscle strength training device according to claim 3, characterized in that, The backrest includes a backrest and a backrest push rod. The backrest is rotatably connected to the seat cushion. The fixed end of the backrest push rod is connected to the seat cushion, and the telescopic end of the backrest push rod is connected to the backrest. The backrest push rod is telescopic to allow the backrest to rotate around the seat cushion.

10. The split-type isokinetic muscle strength training device according to claim 9, characterized in that, It includes a gas spring, one end of which is connected to the seat cushion and the other end of which is connected to the backrest.

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